Sentry is not Superman. He's a Superman wannabe. Kind of like Lobo is a Wolverine wannabe (even though Lobo should pretty much be able to tear Wolverine to shreds). Marvel violated their own rule by making a character as powerful as Sentry- for a long time they didn't want to rest that much power with one character. I still say Superman beats Sentry and the Hulk. He'd play Moe and they'd be his Larry and Curly.